Abstract:
A weakly biased normal-metal-superconductor junction is considered as a potential device injecting entangled pairs of quasi-particles into a normal-metal lead. The two-particle states arise from Cooper pairs decaying into the normal lead and are characterized by entangled spin- and orbital degrees of freedom. The separation of the entangled quasi-particles is achieved with a fork geometry and normal leads containing spin- or energy-selective filters. This solid state entangler is characterized by noise cross-correlations which are identical to the noise in one lead, a signature consistent with entanglement. A connection to Bell-type experiments is envisioned (cond-mat/0009193).
Similar content being viewed by others
Author information
Authors and Affiliations
Additional information
Received 20 September 2001
Rights and permissions
About this article
Cite this article
Lesovik, G., Martin, T. & Blatter, G. Electronic entanglement in the vicinity of a superconductor. Eur. Phys. J. B 24, 287–290 (2001). https://doi.org/10.1007/s10051-001-8675-4
Issue date:
DOI: https://doi.org/10.1007/s10051-001-8675-4